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cachefiles: perform test on s_blocksize when opening cache file.
[linux-2.6-block.git]
/
fs
/
cachefiles
/
namei.c
diff --git
a/fs/cachefiles/namei.c
b/fs/cachefiles/namei.c
index fc1056f5c96a3c750c3c5c9009048b234a7fd745..c4b893453e0eefda8475b3537e934f2bfc46d268 100644
(file)
--- a/
fs/cachefiles/namei.c
+++ b/
fs/cachefiles/namei.c
@@
-655,6
+655,8
@@
lookup_again:
aops = d_backing_inode(object->dentry)->i_mapping->a_ops;
if (!aops->bmap)
goto check_error;
+ if (object->dentry->d_sb->s_blocksize > PAGE_SIZE)
+ goto check_error;
object->backer = object->dentry;
} else {